A two-phase flow model for submarine granular flows: With an application to collapse of deeply-submerged granular columns

Lee, Cheng-Hsien; Huang, Zhenhua

doi:10.1016/j.advwatres.2017.12.012

Cited by 54 publications

(32 citation statements)

References 40 publications

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“…OpenFOAM® built-in functions are used to compute A β D and A β H , which depend on the discretization schemes. For example, Lee et al [16] and Lee and Huang [35] used a second-order time-implicit scheme and a limited linear interpolation scheme for all variables except for velocity. To interpolate velocities, the total-variation-diminishing (TVD) limited linear interpolation scheme is adopted for velocity.…”

Section: Semidiscretized Forms Of the Governing Equationsmentioning

confidence: 99%

“…This section briefly describes two examples that have been studied using the two-phase flow models described. The problem descriptions and numerical setups for these two problems are included here; for other relevant information, the reader is referred to Lee and Huang [35] and Lee et al [38].…”

Section: Applicationsmentioning

confidence: 99%

“…Figure 4 shows the experimental setup of Rondon et al [40]. A 1:1 scale twophase flow simulation was performed by Lee and Huang [35] using the fluid-solid two-phase flow model presented in this chapter. The diameter and the density of the sand grain are 0.225 mm and 2500 kg/m 3 , respectively.…”

Section: Collapse Of a Deeply Submerged Granular Columnmentioning

confidence: 99%

“…The two-phase model and closure models presented in this chapter are able to deal with both initially loose packing and initially dense packing conditions and reveal the roles played by the contractancy inside the granular column with a loose packing and dilatancy inside a granular column with a dense packing. One of the conclusions of Lee and Huang [35] is that the collapse process of a densely packed granular column is more sensitive to the model used for particle response time than that of a loosely packed granular column. The particle response model given by Eq.…”

Section: Collapse Of a Deeply Submerged Granular Columnmentioning

confidence: 99%

“…The lines represent contours of the computed concentrations, and the symbols were experimental data of Rondon et al [40]. The figure is adapted from Lee and Huang [35]. The Author(s).…”

mentioning

confidence: 99%

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Modeling of Fluid-Solid Two-Phase Geophysical Flows

Huang¹,

Lee²

2019

Advanced Computational Fluid Dynamics for Emerging Engineering Processes - Eulerian vs. Lagrangian

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Fluid-solid two-phase flows are frequently encountered in geophysical flow problems such as sediment transport and submarine landslides. It is still a challenge to the current experiment techniques to provide information such as detailed flow and pressure fields of each phase, which however is easily obtainable through numerical simulations using fluid-solid two-phase flow models. This chapter focuses on the Eulerian-Eulerian approach to two-phase geophysical flows. Brief derivations of the governing equations and some closure models are provided, and the numerical implementation in the finite-volume framework of OpenFOAM® is described. Two applications in sediment transport and submarine landslides are also included at the end of the chapter.

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Section: Semidiscretized Forms Of the Governing Equationsmentioning

confidence: 99%

Section: Applicationsmentioning

confidence: 99%

Section: Collapse Of a Deeply Submerged Granular Columnmentioning

confidence: 99%

Section: Collapse Of a Deeply Submerged Granular Columnmentioning

confidence: 99%

“…The lines represent contours of the computed concentrations, and the symbols were experimental data of Rondon et al [40]. The figure is adapted from Lee and Huang [35]. The Author(s).…”

mentioning

confidence: 99%

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Modeling of Fluid-Solid Two-Phase Geophysical Flows

Huang¹,

Lee²

2019

Advanced Computational Fluid Dynamics for Emerging Engineering Processes - Eulerian vs. Lagrangian

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Incorporating grain-scale processes in macroscopic sediment transport models

Vowinckel¹

2021

Acta Mech

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Sediment transport simulations face the challenge of accounting for vastly different scales in space and time that cannot be tackled by a unifying approach. Instead, processes are subdivided into a microscale at the particle level, a mesoscale of a large finite number of particles, and a macroscale that computes the sediment motion by means of advection–diffusion equations. The different processes occurring at different scales are simulated using different computational approaches. However, modeling sediment transport at multiple scales with high fidelity requires proper closure arguments that interconnect the different processes. Ultimately, we will need efficient macroscale models that can readily be utilized for engineering practices covering, e.g., entire river reaches or even estuaries. In recent years, highly resolved simulations have become a valuable tool to provide these closure arguments for sediment transport models on the continuum scale. In this paper, we will review the most relevant approaches to simulate sediment transport at different scales and discuss the perspectives of four most promising modeling techniques that can help to improve sediment transport modeling. On the grain scale, these enhancements include the impact of mechanical properties of cohesion and biocohesion as well as the shape of non-spherical sediment grains on fluid–particle and particle–particle interactions. On larger scales, we review constitutive equations for the macroscopic rheological behavior of sediment beds that may decouple the relevant scales for fluid and sediment motion. Furthermore, we discuss machine learning strategies as an efficient means to derive scaling arguments across multiple scales.

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The simulation of sediment transport and erosion caused by free-surface flow based on two-phase SPH model with the improved Shields criterion

Zhang

Chen

et al. 2022

Ocean Dynamics

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A two-phase flow model for submarine granular flows: With an application to collapse of deeply-submerged granular columns

Cited by 54 publications

References 40 publications

Modeling of Fluid-Solid Two-Phase Geophysical Flows

Modeling of Fluid-Solid Two-Phase Geophysical Flows

Incorporating grain-scale processes in macroscopic sediment transport models

The simulation of sediment transport and erosion caused by free-surface flow based on two-phase SPH model with the improved Shields criterion

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